本篇文章为大家展示了怎么在spring boot中限制redis 接口的访问频率,内容简明扼要并且容易理解,绝对能使你眼前一亮,通过这篇文章的详细介绍希望你能有所收获。
生产环境下可以解决的问题:
1.短信验证码请求评率限制(防止抓包短信轰炸)
2.热点数据请求评率限制(防止数据库爆炸)
@Component public class BlackInterceper implements HandlerInterceptor { @Autowired private RedisTemplate<String, Object> redisTemplate; private Logger log = LoggerFactory.getLogger(this.getClass()); @Override public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception { response.setHeader("Content-type", "text/html;charset=UTF-8"); String token = request.getHeader(Cons.TOKEN.WECHAT); String requestURI = request.getRequestURI(); if (StringUtils.isBlank(token)) { response.setHeader("Content-type", "text/html;charset=UTF-8"); response.getWriter().write(JsonUtils.marshalToString(ReturnResult.build(401, "未授权"))); return false; } Integer userId = (Integer) redisTemplate.opsForValue().get(Cons.TOKEN.WECHAT + ":" + token); log.error("userId={},访问了url={},请求ip={}",token,requestURI, IpUtil.getIpAddress(request)); if(redisTemplate.hasKey("black")){ if(redisTemplate.opsForSet().isMember("black", userId)){ response.getWriter().write(JsonUtils.marshalToString(ReturnResult.build(500, "由于存在恶意攻击你已被限制访问"))); return false; } } Integer count = (Integer)redisTemplate.opsForValue().get("limit:"+token); if(count==null){ redisTemplate.opsForValue().set("limit:"+token, 1, 60, TimeUnit.SECONDS); return true; }else{ if(count>100 && count<150){ response.getWriter().write(JsonUtils.marshalToString(ReturnResult.build(500, "请求太频繁,请稍后再试"))); redisTemplate.opsForValue().increment("limit:"+token, 1); return false; }else if(count>=150){ redisTemplate.opsForSet().add("black",userId,2,TimeUnit.DAYS); response.getWriter().write(JsonUtils.marshalToString(ReturnResult.build(500, "请求太频繁,已经被限制访问"))); //redisTemplate.opsForSet().add("black",token); return false; }else{ redisTemplate.opsForValue().increment("limit:"+token, 1); return true; } } } @Override public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception { // TODO Auto-generated method stub } @Override public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception { // TODO Auto-generated method stub } }
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